package org.jboss.resteasy.plugins.delegates;

import org.jboss.resteasy.resteasy_jaxrs.i18n.Messages;
import org.jboss.resteasy.util.DateUtil;
import org.jboss.resteasy.util.ParameterParser;

import javax.ws.rs.core.NewCookie;
import javax.ws.rs.ext.RuntimeDelegate;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import java.util.Map;

/**
 * @author <a href="mailto:bill@burkecentral.com">Bill Burke</a>
 * @version $Revision: 1 $
 */
public class NewCookieHeaderDelegate implements RuntimeDelegate.HeaderDelegate {
   public static final NewCookieHeaderDelegate INSTANCE = new NewCookieHeaderDelegate();
   private static final String OLD_COOKIE_PATTERN = "EEE, dd-MMM-yyyy HH:mm:ss z";

   public Object fromString(String newCookie) throws IllegalArgumentException {
      if (newCookie == null) throw new IllegalArgumentException(Messages.MESSAGES.newCookieValueNull());
      String cookieName = null;
      String cookieValue = null;
      String comment = null;
      String domain = null;
      int maxAge = NewCookie.DEFAULT_MAX_AGE;
      String path = null;
      boolean secure = false;
      int version = NewCookie.DEFAULT_VERSION;
      boolean httpOnly = false;
      Date expiry = null;

      ParameterParser parser = new ParameterParser();
      Map<String, String> map = parser.parse(newCookie, ';');

      for (Map.Entry<String, String> entry : map.entrySet()) {
         String name = entry.getKey();
         String value = entry.getValue();
         if (name.equalsIgnoreCase("Comment"))
            comment = value;
         else if (name.equalsIgnoreCase("Domain"))
            domain = value;
         else if (name.equalsIgnoreCase("Max-Age"))
            maxAge = Integer.parseInt(value);
         else if (name.equalsIgnoreCase("Path"))
            path = value;
         else if (name.equalsIgnoreCase("Secure"))
            secure = true;
         else if (name.equalsIgnoreCase("Version"))
            version = Integer.parseInt(value);
         else if (name.equalsIgnoreCase("HttpOnly"))
            httpOnly = true;
         else if (name.equalsIgnoreCase("Expires")) {
            try
            {
               expiry = new SimpleDateFormat(OLD_COOKIE_PATTERN, Locale.US).parse(value);
            }
            catch (ParseException e)
            {
            }
         } else {
            cookieName = name;
            cookieValue = value;
         }

      }

      if (cookieValue == null)
      {
         cookieValue = "";
      }

      return new NewCookie(cookieName, cookieValue, path, domain, version, comment, maxAge, expiry, secure, httpOnly);

   }

   protected void quote(StringBuilder b, String value) {

      if (MediaTypeHeaderDelegate.quoted(value)) {
         b.append('"');
         b.append(value);
         b.append('"');
      } else {
         b.append(value);
      }
   }

   public String toString(Object value) {
      if (value == null) throw new IllegalArgumentException(Messages.MESSAGES.paramNull());
      NewCookie cookie = (NewCookie) value;
      StringBuilder b = new StringBuilder();

      b.append(cookie.getName()).append('=');

      if (cookie.getValue() != null) {
         quote(b, cookie.getValue());
      }

      b.append(";").append("Version=").append(cookie.getVersion());

      if (cookie.getComment() != null) {
         b.append(";Comment=");
         quote(b, cookie.getComment());
      }
      if (cookie.getDomain() != null) {
         b.append(";Domain=");
         quote(b, cookie.getDomain());
      }
      if (cookie.getPath() != null) {
         b.append(";Path=");
         b.append(cookie.getPath());
      }
      if (cookie.getMaxAge() != -1) {
         b.append(";Max-Age=");
         b.append(cookie.getMaxAge());
      }
      if (cookie.getExpiry() != null) {
         b.append(";Expires=");
         b.append(DateUtil.formatDate(cookie.getExpiry(), OLD_COOKIE_PATTERN));
      }
      if (cookie.isSecure())
         b.append(";Secure");
      if (cookie.isHttpOnly())
         b.append(";HttpOnly");
      return b.toString();
   }
}
